From its first detection using an instrument designed in part by teams based in the Bay, to follow-up orbit analysis ...

The discovery and swift monitoring of asteroid 2024 YR4 earlier this year represented Earth's first real-life planetary defense test.

Asteroid 2024 YR4 will not hit Earth, but it has forced planetary defense experts to confront a different kind of worst case: ...

Asteroid 2024 YR4 has popped up on the news again, offering both peril and opportunities, A few months ago, NASA noted that 2024 YR4 had a 3.1 percent chance of hitting the Earth in 2032. Since the ...

If an asteroid is on a collision course with the moon, what should humanity do? Try to nudge the space rock out of the way before it strikes? Obliterate it with a nuclear explosion? Such a cosmic ...

An asteroid could wipe out humanity, but it's unlikely. Near-misses are more common than impacts, though planetary defence is ...

Because it's big enough to be deemed a "city killer," asteroid 2024 YR4 became a source of alarm due to the uncommonly high risk it had of colliding with Earth on Dec. 22, 2032. While Earth may no ...